[FAB-8510] put back "-m" in byfn tutorial
[FAB-8510] put back "-m" in byfn tutorial

The "-m" is not needed in latest but could trip up those
using older release level fabric-samples.

Change-Id: I57f64604971b56a95534db2391c3c8db1e5711da
Signed-off-by: Srinivasan Muralidharan <523c2042295185cd087fe3a05deea7bac4a627b2@gmail.com>

xixuejia/fabric,jimthematrix/fabric,hyperledger/fabric,stemlending/fabric,manish-sethi/fabric,manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb,binhn/fabric,stemlending/fabric,manish-sethi/fabric-sidedb,binhn/fabric,muralisrini/fabric,jimthematrix/fabric,manish-sethi/fabric-sidedb,stemlending/fabric,xixuejia/fabric,xixuejia/fabric,manish-sethi/fabric-sidedb,manish-sethi/fabric,muralisrini/fabric,binhn/fabric,muralisrini/fabric,hyperledger/fabric,manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb,stemlending/fabric